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O&O Defrag Pro

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O&O Defrag Professional 19.0 (64-bit)

  -  28.62 MB  -  Trial
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of O&O Defrag Professional 19.0 (64-bit).


For those interested in downloading the most recent release of O&O Defrag Pro or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download O&O Defrag Professional 19.0 (64-bit)

  • O&O Defrag Professional 19.0 (64-bit) Screenshots

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    O&O Defrag Professional 19.0 (64-bit) Screenshot 1
  • O&O Defrag Professional 19.0 (64-bit) Screenshot 2
  • O&O Defrag Professional 19.0 (64-bit) Screenshot 3
  • O&O Defrag Professional 19.0 (64-bit) Screenshot 4
  • O&O Defrag Professional 19.0 (64-bit) Screenshot 5

What's new in this version:

New: In-built O&O DiskCleaner:
- Searches for and removes temporary and unnecessary files that are taking up memory and increasing fragmentation. O&O DiskCleaner also increases the security of your data, as private content (e.g. Thumbs.db, copies of documents, drafts of emails, Dumps) will no longer be kept as copies in unnecessary system files.

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